Nut-lock.



A. N. GANDY.

NUT LOOK. APPLIOATION FILED SEPT. 7, 1911.

1,019,243. 1 Patentd Mal-.5, 1912.

AE'IHITfi NEWELL GANDYQ'OF BRUNDIDGE, ALABAMA.

NUT-LOCK nmate.

- useful Improvements in Nut-Locks; and I do hereby declare thefollowing'to be a full,

clear, and exact description of the invention, such as Wlll enableothers skllled in the art to which it appertains to make and use thesame.

This invention relates to nut locks.

The object of the invention resides in the provision of a nut lock whichwill efi'ectually prevent the rotation of a nut upon a bolt after. theformer has been applied to the latter, as theresult of jarring or othercauses.

A further object of the invention resides 'in the provision of a nutlock which can be manipulated with ease and facility so as to permitthe" disengagement of a nut from a bolhwhen so desired. 1'

t still further object of the invention resides in the provision of 'anut lock which will be simple in construction, efiicient in use andeasily applied.

With the above and other objects in view, the invention consists in the'details otconstruction and in the arrangement and combination of partsto be hereinafter more fully described and particularly pointed out inthe appended'claim.

.In describing the invention in detail, ref erence will be had to theaccompanying drawings wherein like characters of reference denotecorresponding parts in the several views, and in which Figure 1 is aside elevation of an associated bolt and nut embodying the improved nutlock; Fig. 2, an enlarged viewlooking at the end of the bolt whichcarries the nut, the latter being shown in locking position with respectto the locking pin, Fig. 3, a view similar to Fig. 2 with the nutdisposed in released position with re spect to the locking key and the.latter removed, Fig. 4, a section on the line 4l--4t of Fig. 2, aridFig. 5, a detail perspective view of the locking key.

Specification of Letters Patent.

Patented Mar. 5, 1912.

Application filed September 7, 1911. Serial Ito. 648,202.

Referring to the drawings, 10 indicates abolt provided with the usualthreads 11 ,uponwhich' latter is mounted a nut 12. "The threads 11 ofthe bolt 10' are interrupt- 'edby a longitudinal groove 13, while thethreads of the nut 12 are lnterrupted by a plurality of longitudinalgrooves 14 which are adapted to respectively mate with the groove13dependent-upon the positlonof the nut 12 when the latter has beenscrewed home the desired distance. -Insertserted in the grooves 13- and14' and the nut 12 is rotated to the left a distance equal to thedifference in width between the grooves .13 and 14 and the locking keyA, the teeth 15 of said locking key will enter between the threads ofthe nuts 12? and the withdrawal of said key will thereby be renderedimpossible and the nut thus secured against Howrotation in an unlockingdirection by the engagement of opposite sides of thelocking key withrespective opposite side Walls of the grooves 13 and 14.

What is claimed is:.

In a nut lock theicombination of a bolthaving its threads interrupted bya longi- 'tudinal groove, a nut on said bolt also having its threadsinterrupted .by' a longitudinal groove overlying the groove in. thebolt, a locking key disposed in said grooves and of less width than thelatter, and a plurality of teeth formed on one edge of the lock-, lngkey adapted to pass between the'threads of the nut respectively when thelatte'r is rotated in one direct-ion.

In testimony whereof, I aflix my signature, in presence of twowitnesses.

ARTHUR NEVVELL GANDY.

l/Vitiiesses 2 D. H. LAMsoN, J. B. BLANTON.

